c - 从 char* 到 char 的无效转换？

Question

我这里有问题

void myFunction(char string){}    

int main(void)
{
    char test[] = "HEYYY";

    myFunction(test);

}

为什么会出现此错误？error: invalid conversion from 'char*' to 'char' [-fpermissive]

Answer 1

Because myFunction takes in a character, not a cstring. What do you want myFunction to do? Did you mean void myFunction(const char *string) { }?

Answer 2

Your function is, apparently, expecting a single character in a parameter (mis)named string.

You probably need to fix the prototype (definition):

void myFunction(char *string);
void myFunction(char string[]);